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P0122 Code + Transmission Problem! HELP!

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3.5K views 4 replies 2 participants last post by  Landan@latemodel  
#1 · (Edited)
Ok, so long story short. The other day I went to drive the L, and when I got in and started it the CEL came on. I let it warm up real good(10 mins), and then took it for a drive. While driving, I noticed the transmission was acting funny.
Shifting real hard from 1st to 2nd, and not wanting to come out of 3rd into 4th.

I limped it back home, and put the OBDII scanner on it. Pulled P0122 code.

Any ideas?

2000 Lightning w/ 61k miles
Bolt On's
Tuned by PSI in Houston
Shift Kit and 2600 stall in the tranny.

-Landan-

7/31/2012
*** I solved this code by adjusting my throttle position sensor (TPS) to .99v. ***
 
#2 ·
P0122 Code - Throttle Position Sensor/Switch A Circuit Low Input

What does that mean?

A P0122 code means that the the car's computer has detected that the TPS (throttle position sensor) is reporting too low a voltage. On some vehicles that lower limit is 0.17 - 0.20 volts (V).

Did you adjust it when you installed it? If the signal value is less than .17V then the PCM sets this code. Could be an open or a short to ground in the signal circuit. Or you may have lost the 5Volt reference voltage.

Symptoms may include: ***8226;Rough or low idle
***8226;Stalling
***8226;Surging
***8226;No/little acceleration
***8226;other symptoms may also be present
 
#4 ·
well most your symptoms match up to the tps recieving lower voltage than needed. your trucks computer wont lie when something is wrong.....ive never had this problem so im not sure what to check next, but im sure help is on the way
 
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